Flue-cleaner.



o. 847,813. PATE'NTED MAR. 19,1907. 3.0. PHILLIPS.

' FLUE CLEANER; v APPLICATION FILED SEPT. 7, 1906. v

UNITED STATES PATENT OFFICE.

FLUE-OLEANER Specification of Letters Patent.

Patented Maren 19, 1907.

Application filed September 7,1906. Serial No. 333,667.

To all whom it may concern.-

Be it known that I,- ELwooD C. PHILLIPS,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Flue-Cleaners; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

This invention relates to improvements in cleaners or scrapers for the tubes of flues of steam-boilers and it consists in the novel construction, combination, and arrangement of parts hereinafter described and claimed.

The object of the invention is to improve and simplify the construction of devices of this character, and thereby render the same more durable and efficient and at the same time less expensive.

The above and other objects, which will appear as the nature of my invention is hetter understood, are accomplished by means of the construction illustrated in the accompanying drawings, in which Figure 1 is a side elevation, partly in section, of the improved flue-cleaner. Fig. 2 is an end view of the same, and Flg. 3 is a perspective view of one of the springs which serve as scraper-blades.

The improved cleaner or scraper comprises two heads 1 2, preferably of frusto conical form, united by a plurality of spirally-curved springs forming. scraper-blades 3, which extend diagonally of the flue-cleaner so that when the latter is moved longitudinally the side edges of the blades will contact with the inner faces of the flues and scrape the soot and scale therefrom. The blades 3 are in the form of flat strips of resilient metal twisted spirally and also curved longitudinally, so that the scraper is broader at its center than at its ends. The heads 1 2 are preferably but not necessarily made of castiron, and the ends of the blades or strips 3 are secured in them by casting the metal of said heads around the ends of the blades.

The portions of the ends of the blades which are embedded in the heads are preferably crimped or corrugated transversely, as clearly shown at 4 in Figs. 1 and 3, so that said ends of the blades will be locked in the heads and prevented from being pulled out. The heads 1 2 are preferably formed with concentric openings 5, the one in the lower or inner head 2 being screw-threaded to receive the threaded end 6 of a handle or rod 7, by I means of which the scraper is moved through the fiue.

It will be observed by reference to Fig. 1 of the drawings that the outer head 1 is not directly connected to the rod 7, but is supported solely by the blades 3.

Owing to the resiliency of the blades 3, the device may be used in fiues of different sizes, and owing to the spiral twist of the blades they produce a shirring cut on the inside of the fines, which effectively removesthe crust therefrom.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without re uiring a more extended explanation.

arious changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention as defined by the appended claim.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

A flue-cleaner of the class described comprising a rod, an inner head secured thereto, an outer head and a plurality of resilient spirally-disposed blades having their ends crimped and embedded rigidly in the inner and outer heads, the outer head being supported solely by the said blades.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ELWOOD C. PHILLIPS.

Witnesses:

J. A. BRIGHT,- C. A. BRADWAY. 

